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Thread: "Great Stuff" foam sealant

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    Great Pumpkin NutmegCT's Avatar
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    "Great Stuff" foam sealant

    I'm probably the densest klotz in the world. How the heck do you store "Great Stuff" foam sealant after use?

    You fill the area you're trying to seal. Now you've got a 90% full can.

    You can unscrew and remove the application tube ... but the foam is now hardened inside the tube. You can't run an acetone-soaked pipe cleaner through unless you do it within about 30 seconds of us.

    Dow-Great-Stuff-Big-Gap-Filler-Insulating-Foam-_1.jpg

    What to do? Gloom, despair, and agony on me!

    https://youtu.be/ZAAKPJEq1Ew


    Thanks.
    Tom M.
    Mac & Phyllis Take a Trip: http://nutmegflyer.com/trip-details-daily-updates/
    History: 1976 MGB, 1959 Triumph TR3A, 1960 Mercedes-Benz 190b, 1958 Rambler American.
    Current: 1953 MG TD27318.

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    Yoda dklawson's Avatar
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    Re: "Great Stuff" foam sealant

    Immediately after using Great Stuff I unscrew the applicator tube and spray carb cleaner down through it and into a trash can. I also invert the can over a trash can and spray carb cleaner into the threaded stem/nozzle on the can. If the applicator tube sill appears to have goo inside I wrap a bit of paper towel around a coat hanger wire, spray it with carb cleaner, and use it like a pipe cleaner to remove stuff from the tube walls.

    I do this immediately after use so the filler hasn't cured. I don't know what you would do if you waited until the foam has set.

    As for the Hee Haw reference... thanks? My dad made us watch that show every weekend of my youth. Now I have an earworm that will stick with me for several weeks!
    Doug L.
    '64 Morris Mini Cooper-S 1275
    '67 Triumph GT6 Mk1

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    Great Pumpkin NutmegCT's Avatar
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    Re: "Great Stuff" foam sealant

    Doug - thanks for that info. I've been fumbling with the stuff for many years, and always frustrated that I waste most of the can.

    Your dad had excellent taste in TV shows. And here's one of my favorite TV ads, which still runs often here in sophisticated New England:

    https://youtu.be/nyn1YZ1k0Y4

    "We've got the king, we've got the queen, we do the discount thing!"

    Do we have taste, or what ...
    Mac & Phyllis Take a Trip: http://nutmegflyer.com/trip-details-daily-updates/
    History: 1976 MGB, 1959 Triumph TR3A, 1960 Mercedes-Benz 190b, 1958 Rambler American.
    Current: 1953 MG TD27318.

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    Great Pumpkin JPSmit's Avatar
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    Re: "Great Stuff" foam sealant

    I just threw away a can - same reason
    John-Peter Smit
    1976 MG Midget
    1969 Vauxhall Viva GT
    1958 Fiat Multipla (Barn art)

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    Great Pumpkin TR3driver's Avatar
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    Re: "Great Stuff" foam sealant

    Even with all those steps, it doesn't seem to keep very long. Use it or lose it.
    Randall
    56 TR3 TS13571L once and future daily driver
    71 Stag LE1473L waiting engine rebuild
    71-72-73 Stag LE2013LBW waiting OD gearbox rebuild

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    Yoda dklawson's Avatar
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    Re: "Great Stuff" foam sealant

    As I understand it, urethane foams like Great Stuff cure by exposure to moisture. If you don't get most/all the stuff off the valve inside the top of the can, it will set there and it can allow moisture to wick through causing the whole can to thicken and cure. It is similar to what happens once you open a container of Gorilla Glue. Use it quickly or it will set in the container.

    That said, when I have carefully cleaned the top of the can I have been able to use it again for at least a month or two.
    Doug L.
    '64 Morris Mini Cooper-S 1275
    '67 Triumph GT6 Mk1

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